We comment that this definition of the maps between elements of \(V(t)^*\)  and \(V_0^*\)  are in the same spirit of [1]}.
However, the maps are considered differently, due to the way we wish to characterise our spaces; in particular the fact that we wish for our \(V^*\)  spaces to be divergence free \(H^{-1}\)  spaces, rather than the abstract dual of the \(V\)  spaces, which will be larger than \(H^{-1}\) .
